Digital Realty Trust Inc., which buys and leases technology real estate, said this week it has closed on several facilities in key U.S. technology markets.

The company has bought 251 Exchange Place in Herndon, Va., which is close to Washington, D.C.. The building measures 71,000 square feet and Digital Realty Trust said it is fully leased, long-term, to a broadband network provider using it as an Internet gateway facility.

Digital Realty Trust also recently purchased two buildings at the Met Center Business Park, near downtown Austin. The first building is approximately 45,000 square feet and is leased to one tenant that uses it as a network operations and data center. The second building, approximately 75,000 square feet, is unoccupied. Digital Realty Trust plans to position it as a data center for corporate and Internet enterprise users.

The company further has bought Three Corporate Place in Piscataway, N.J., an unoccupied 283,000-square-foot building, and 4025 Midway Road in Carrollton, Texas, a suburb of Dallas. That facility is a 101,000-square-foot data center that is unoccupied and will be marketed to single and multitenant users.

Digital Realty Trust Inc. www.digitalrealtytrust.com